**Trader consensus at 100% for a 20°C maximum reflects the strong alignment of official forecasts for Amsterdam on August 21, 2026.** Multiple meteorological agencies, including the Met Office and KNMI, project a daytime high of 20°C under conditions featuring light showers, moderate westerly winds, and typical late-summer maritime influence that limits warming. This matches climatological baselines for the period and recent model runs showing stable temperatures near 19–21°C. Official resolution relies on measurements at Schiphol Airport, where observed values have closely tracked these predictions in prior days. Realistic challenges include localized variations in cloud cover or precipitation timing that could shift the peak by 1°C, or minor revisions in final observational data, though current guidance indicates low likelihood of deviation outside the 20°C bin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Amsterdam on August 21?
Highest temperature in Amsterdam on August 21?
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$89,350 Vol.
$89,350 Vol.
Aug 21, 2026
15°C or below
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
Yes
21°C
No
22°C
No
23°C
No
24°C
No
25°C or higher
No
20°C 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$89,350 Vol.
$89,350 Vol.
Aug 21, 2026
15°C or below
$2,314 Vol.
No
16°C
$408 Vol.
No
17°C
$17,602 Vol.
No
18°C
$8,924 Vol.
No
19°C
$8,765 Vol.
No
20°C
$17,301 Vol.
Yes
21°C
$11,306 Vol.
No
22°C
$8,627 Vol.
No
23°C
$10,306 Vol.
No
24°C
$2,428 Vol.
No
25°C or higher
$1,370 Vol.
No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.**Trader consensus at 100% for a 20°C maximum reflects the strong alignment of official forecasts for Amsterdam on August 21, 2026.** Multiple meteorological agencies, including the Met Office and KNMI, project a daytime high of 20°C under conditions featuring light showers, moderate westerly winds, and typical late-summer maritime influence that limits warming. This matches climatological baselines for the period and recent model runs showing stable temperatures near 19–21°C. Official resolution relies on measurements at Schiphol Airport, where observed values have closely tracked these predictions in prior days. Realistic challenges include localized variations in cloud cover or precipitation timing that could shift the peak by 1°C, or minor revisions in final observational data, though current guidance indicates low likelihood of deviation outside the 20°C bin.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 19, 2026, 12:57 AM ET
Volume
$89,350End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.**Trader consensus at 100% for a 20°C maximum reflects the strong alignment of official forecasts for Amsterdam on August 21, 2026.** Multiple meteorological agencies, including the Met Office and KNMI, project a daytime high of 20°C under conditions featuring light showers, moderate westerly winds, and typical late-summer maritime influence that limits warming. This matches climatological baselines for the period and recent model runs showing stable temperatures near 19–21°C. Official resolution relies on measurements at Schiphol Airport, where observed values have closely tracked these predictions in prior days. Realistic challenges include localized variations in cloud cover or precipitation timing that could shift the peak by 1°C, or minor revisions in final observational data, though current guidance indicates low likelihood of deviation outside the 20°C bin.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Amsterdam Airport Schiphol Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$89,350End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/nl/schiphol/EHAMResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Trader consensus at 100% for a 20°C maximum reflects the strong alignment of official forecasts for Amsterdam on August 21, 2026.** Multiple meteorological agencies, including the Met Office and KNMI, project a daytime high of 20°C under conditions featuring light showers, moderate westerly winds, and typical late-summer maritime influence that limits warming. This matches climatological baselines for the period and recent model runs showing stable temperatures near 19–21°C. Official resolution relies on measurements at Schiphol Airport, where observed values have closely tracked these predictions in prior days. Realistic challenges include localized variations in cloud cover or precipitation timing that could shift the peak by 1°C, or minor revisions in final observational data, though current guidance indicates low likelihood of deviation outside the 20°C bin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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